However, after the final there were suggestions that Karius' performance may have been the result of a collision with Madrid captain Sergio Ramos just minutes prior to his first mistake.

In the 49th minute, with the scores tied at 0-0, Karius suffered a blow to the head when Ramos elbowed the 24-year-old keeper in the head while attacking a corner, with the Liverpool medical team now fearing he may have suffered a head trauma following the collision.

Subsequently, it has been reported that Karius underwent a head scan following the final in order to check for any abnormalities, as reported by ESPN.

A post shared by 90min (@90min_football) on May 31, 2018 at 9:24am PDT

After the final in Kiev, the Liverpool number one flew to the United States of America on holiday but, with the club concerned for his health, they reportedly sent him to see a specialist in Boston - Dr. Ross Zafonte, at Massachusetts General Hospital on May 31.

Dr Zafonte is an American board-certified physiatrist, specialising in the treatment of NFL players who have suffered head injuries, with Karius sent to visit him following consultation with Liverpool's Boston-based owners, Fenway Sports Group.

Following Karius' scan, the German goalkeeper is set to remain on holiday before Liverpool's pre-season training commences on July 2.

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